+118673 We need to put together a list of Categories and sub categories that we can present to Mr Massow for his consideration.
At present the categories are
FUN, MATHEMATICS, OFF TOPIC, AND PHYSICS
Mathematics is then split into many sub-categories.
Would anyone like to start a list so we can start commenting on it and gaining ideas.
Thanks 
THIS IS WITH THE STICKY THREADS SO THAT IT WILL BE EASY TO FIND.
+33661 Here's a starter for a mathematics sub-category list
Arithmetic
Geometry
Trigonometry
Algebra
Calculus
Differential equations
Logic
Probability and statistics
+3146 Hi Melody, Hi Alan,
good idea. let's see what topics will be suggested.
available math sub category topics:
+118673 I'd like co-ordinate geometry to be in there and Matrices and financial mathematics
Alan, why did you separate differential equations from calculus?
what is the difference between game theory and probability?
maybe statistics and probability could be separated.
Where would we put surds and sequences and series?
Could we also introduce difficulty levels? This would be especially relevant for topics like algebra.
All just ideas.
+33661 Melody, I tend to think of differential equations as a large subject in its own right, though you can, of course, think of it as a subset of calculus.
A danger of having too many subgroups is that some topics might fit into more than one (e.g. ODEs or Calculus?).
(Incidentally, Matrices would be part of Linear Algebra).
+118673 I would like to have the possible use of 3 difficulty levels (or sub topics) . Would this be possible admin?
This way there would be less need for more topic headings.
We do not get that many calculus questions - To split them up (other than by difficulty) seems like over k**l to me.
What other topics belong in linear algebra?
And again, where would we put surds.
Maybe we could have a number topic
easy - arithmetic
medium - surds
advanced - complex numbers ?
Would sequences and series have there own category?
And how about set theory? - Maybe it could be scattered depending on the bigger question.
Perhap using calculators could also be a category?
+118673 Off topic would be a non maths question like your English one or a chemistry one.
+118673 You are right Dragon.
I think this one needs a new topic called Information.
I am not so keen on Off Topic either. I think I would prefer other ?
+111 mabey you can do it by grade level (ei elemetary, middle, high, and phisics/caculus 7/ whatever you do in collage)
or do
addtion, subtraction, mutiplcation, division, fractions, order of operations, equations/algebra, graphing, gometry etc.
mabey do subsets in each grade level, so that a middle school student who (for exaple) exceled at probabillity can help a third grader without being to intimadated to answer with questions like "What is the subset of 74 squared times the speed of light in a vaccum divded be the weight of a humming birds eyeball in scientific notation? please show all graphs."
mabey one for riddles/ brain teasers?
sorry for spelling mistakes i'm tired
+9673 It is long since the last person commented on this post. And I think the sub topics of mathematics are still not available yet?
I am going to suggest a new list.
List:
Algebra
Geometry
Logics
Statistics
Trigonometry
Pre-calculus
Calculus
This list is much shorter and I can't think of anything that isn't in the area of the list.
Differential Eq.s are in calculus.
Financial Maths are in Algebra due to the percentages and indices.
Surds are in Algebra.
Complex numbers are in Algebra or Geometry because there are various kinds of complex numbers question. Some involves Pythagoras Theorem.
Coordinates are in Geometry.
Pythagoras Theorem is in Geometry or Trigonometry.
I think we don't need so much categories.
